Sprinkler-head.



J. 1. LINEHAN.

SPRINKLER HEAD.

APPLICATlDN FILED FEB. 17. me

1 ,241,74:7. Patented Oct. 2, 1917.

weather without the danger of the supply.

' rangement of JOSEPH J. LINEHAN, 0]? WHITE PLAINS, NEW YORK.

SPRINKLER-HEAD.

Specification of Letters Patent.

Patented Oct. 2, 191 '7.

Application filed February 17, 1916. Serial No. 78,954.

To all whom it may concern Be it known that I, JOSEPH J. LINEHAN, a citizen of the United States, residing at White Plains, in the county of lVestchester, State of New York, have invented certain new and useful Improvements in Sprinkler- Heads; and I do hereby declare the following to be a full, clear, and exact description .of the invention, such as will enable others upon bein subjected to a .suflicient degree of heat, it will operate to discharge water into the flames.

A further object of the invention is to provide a sprinkler head which can be used exteriorly of a building in extremely cold pi es becoming frozen.

ith these and other objects in view, this invention resides in the novel features of construction, formation, combination and ararts to be hereinafter more fully. describe claimed and illustrated in the accompanying drawing, in which w Figural is a front elevation of the device. Fig. 2 is a vertical central sectional view through the same.

Fig. 3 is a. bottom plan view.

Fig. 4 is a side view.

Fig. 5 is a sectional view on line 5-5 of F' 1. ig. 6 is a' sectional view on line 6-6 of i the service pipe,

ferring to the drawing 1 1nd1cates a cylindrical casing which is interlorly thread ed, as at 2 for receiving the lower end of. fl is branch pipe 3, said pipe depending from (not shown).

The lower end-of the pipe 3 constitutes a valve seat 4.

iently adjusting the screw.

Operable in e casing 1 18 a conical valve 10 having an annular shoulder 11 carried thereby for supporting the gasket 12 which normally engages the seat 4 to tightly close the lower end of the pipe 3, thus insuring a fluid t ght joint. The valve is held normally seatedby the fusible block 13 which is placed with its lower end on the diskS and its up er end engaged with the bottom of said va ve.

The screw is adjustable so that the block will holdthe valve tightly seated. The blocks 13 are formed referably from sealing wax or the like w ien used in buildin not abnormall heated, but should the hea s be located in oiler rooms, or places which are abnormally heated, the blocks will be made from material which will not fuse until subjected to a great degree of heat.

The valve 10 is rovided with a recess 14 in which is secure plate being suitably insulated from the valve and has attached to the bindin screw 16 a conducting wire 17, which lea s from any suitable source of. electrical ener v One arm of the yoke 5 is recess as at 18 and. has fixed therein a resilient contact strip 19, said strip having leading thereto .its closed position by the block 13, but

should a fire occur near the devices, it is obvious that the block 13 will melt, thus permitting the valve 10 to drop, and as it drops the plate 16 will contact with the strip 19, thus'closing the circuit and sounding an alarm, and itwill be of course understood that as soon as the valve drops the water will be released and will flow against the valve, which is conicaLthereby spraying the same so as to extin ish the fire. It will be noted that the va veis of such height that after the block is melted the lower-end of the valve will rest on the dlsk 8', while the upper end thereof Wlll extend sli htly into the casing thus preventing the va ve from tilting an dropping from the yoke 5. Thus it will be seen that the valve will always remain within the casing and .can be readily seated upon applying an:

' branch pipes 3 be charged with air under a contact plate 15, said.

pressure so that water will not enter the pipes until the valve is released, thereby eliminating any danger of Water freezing in the pipes and preventing the devices from 0 eratin It will be 0% course understood that any number of these devices ma be placed in a room or other part of t e building as deemed advisable.

The wires 17 and 20 are preferably in circuit with an annunciator, whereb it can be readily determined which sprin er head is in operation so that the place of fire can be readily ascertained.

It is obvious that the disk 8 may be adjusted so that it will enga e the lower end of the valve 10 so as to hol the same seated after the fusible block 13 has been removed or melted. Thus it will be seen that any one of the sprinkler heads can be shut oflf without interfering with the operation of the remaining ones.

What is claimed is A sprinkler head comprising a casing provided with a depending yoke havin a recess in one of the side members there a valve movable longitudinally in said a and engageable wlth the inner surfaces 0 said side members means adjustably carried by the bi ht portion of said yoke for supporting a usible block in engagement with said' valve whereby the same 15 normally retained in its closed ositi0n, a

counter sunk contact plate carried by said In testimony whereof, I aflix my signature, in the presence of two Witnesses.

' JOSEPH J. LINEHAN. Witnesses:

Bonnn'r BELL, FRANK JARVIS. 

